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Old 10-10-2019, 01:21 PM   #1
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Changing filter sponges- When?

how often does anyone change there filter media sponges?surely they need replaced sometimes. My tanks have been running around a year with my aqua clear 20's. Thanks
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Old 10-21-2019, 04:49 PM   #2
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Basically never.

If the filter sponge is loosing the shape / collapsing on itself it would probably be time.

If the filter pad/floss stuff has no more shape, falling apart, then it is time.

What I normally do is either

squeeze the dirty one into the new one and add the new one to the filter and add the old one on the substrate below the intake and out flow. This positions it where it can still feed the BB. Leave it in the tank for a month.

Or the other way around, and leave the new filter media in the tank under the inflow for a month

or
add the new sponge to the filter, with the old one on top, which depends how much room you have.
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Old 10-21-2019, 05:36 PM   #3
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I think I've chucked one in the last 6 years. Once it starts falling to pieces you can replace. Save a section of the old to seed the new.
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Old 10-22-2019, 01:42 PM   #4
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Sponge Filters

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Originally Posted by DavesTanks View Post
how often does anyone change there filter media sponges?surely they need replaced sometimes. My tanks have been running around a year with my aqua clear 20's. Thanks
Hello Dave...

I use sponges only. The other filters are way more expensive and don't do any better than sponges to filter the tank water. Every week, when I perform my water changes, I squeeze out the sponges in some of the old tank water and put them back on the filter. Eventually, the sponge won't return to its original shape and that's when I replace it.

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